Farmall M Head

I have a question for those who know farmall heads, I rebuilt an M in college and am having trouble getting water in the oil. I replaced head gasket, which looked fine, and we looked the head over for cracks. So today I go to retorque the head bolts and on one of the bolts after I tightened it I started getting water coming around the nut, while the head was cool and the tractor was off. It looks to me like there is a sleeve in the head where this bolt comes up through, can anyone verify that and if so is there anywhere to get a new sleeve and how do you get the old one out?

Not personally familiar with a Farmall head, but
looking at Bing pictures, I don't see anything
unusual about it, like a sleeve. I do see raised
pads where the bolt holes are drilled, but that's
just part of the casting, not a separate sleeve.

It's not unusual for coolant to find it's way up a
head bolt or stud. Typically if the stud or bolt
is threaded into an "open" hole in the block deck,
(a hole drilled and tapped into the water jacket).
The bolt or stud will be installed with sealer on
the threads.

There are a couple ways to remedy this. Double nut
the stud and pull it, clean it up, seal it with
Permatex, Teflon thread sealer, silicone, etc.,
reinstall it and seal the nut also.

The other, and probably the safer method, remove
the nut, add a grade 8 flat washer with sealer
under the washer, nut and threads. You could do
this to all of them, but do them one at a time! Be
sure there is room for the washer, it must sit
flat on the machined surface, not overlaping a non
machined surface that would hold it up. You can
buy hardened head bolt washers at the auto supply
just for this.

Theres water jackets in the head. If I had to take a guess, its cracked where the stud goes through, OR the head gasket is bad near there, but you say its new, so Im thinking cracked head.

I had a leak on my Farmall M head like that. Found a small crack
and I had the crack epoxyed. Has held up now for years.
Brian

There are indeed two steel sleeves in the head which two of the studs come thru. Whether or not these sleeves are exposed to coolant in the head I do not know. There is supposed to be a special washer under the nut on each of these studs.

(quoted from post at 21:06:00 03/28/14) There are indeed two steel sleeves in the head which two of the studs come thru. Whether or not these sleeves are exposed to coolant in the head I do not know. There is supposed to be a special washer under the nut on each of these studs.

Click to expand...

Yes, you know what I'm talking about. For good or bad we had a ruined head laying around so I did some experimenting and like you said there is a steel sleeves and I tried to drive it out and ended up drilling it mostly out, there is about a two inch cavern in there that the sleeve seals off the water. My guess is that's the problem, any idea if I could find those sleeves or what a person could do?

(quoted from post at 05:59:10 03/29/14)

(quoted from post at 21:06:00 03/28/14) There are indeed two steel sleeves in the head which two of the studs come thru. Whether or not these sleeves are exposed to coolant in the head I do not know. There is supposed to be a special washer under the nut on each of these studs.

Click to expand...

Yes, you know what I'm talking about. For good or bad we had a ruined head laying around so I did some experimenting and like you said there is a steel sleeves and I tried to drive it out and ended up drilling it mostly out, there is about a two inch cavern in there that the sleeve seals off the water. My guess is that's the problem, any idea if I could find those sleeves or what a person could do?

Click to expand...

More than likely you will have to have a machine shop make a new sleeve. They can also press out the old sleeve and press in the new.

Is there any chance that it is getting by
the o-rings in the bottom of the piston
sleeves? Not what you asked, just another
thought.

(quoted from post at 04:02:03 03/31/14) Is there any chance that it is getting by
the o-rings in the bottom of the piston
sleeves? Not what you asked, just another
thought.

Click to expand...

No pretty sure not, was all clean and ran good after changed head gasket, then I decided to retorque the head bolts and as I was putting lifter rods back in I noticed water seeping around a nut on a head bolt!

M doesn't have wet sleeves so no oring.